<template>
  <a-spin :spinning="cardLoading">
    <a-card :bordered="false">
      <div
        v-if="hasPerm('sysFileInfo:page')"
        class="table-page-search-wrapper"
      >
        <a-form layout="inline">
          <a-row :gutter="48">
            <a-col
              :md="8"
              :sm="24"
            >
              <a-form-item label="存储位置">
                <a-select
                  v-model="queryParam.fileLocation"
                  placeholder="请选择存储位置"
                >
                  <a-select-option
                    v-for="(item,index) in fileLocationDictTypeDropDown"
                    :key="index"
                    :value="item.code"
                  >
                    {{ item.value }}
                  </a-select-option>
                </a-select>
              </a-form-item>
            </a-col>
            <a-col
              :md="8"
              :sm="24"
            >
              <a-form-item label="文件仓库">
                <a-input
                  v-model="queryParam.fileBucket"
                  placeholder="请输入文件仓库"
                />
              </a-form-item>
            </a-col>
            <template v-if="advanced">
              <a-col
                :md="8"
                :sm="24"
              >
                <a-form-item label="文件名称">
                  <a-input
                    v-model="queryParam.fileOriginName"
                    placeholder="请输入文件名称（上传时候的文件名）"
                  />
                </a-form-item>
              </a-col>
            </template>
            <a-col
              :md="!advanced && 8 || 24"
              :sm="24"
            >
              <span
                class="table-page-search-submitButtons"
                :style="advanced && { float: 'right', overflow: 'hidden' } || {} "
              >
                <a-button
                  type="primary"
                  @click="$refs.table.refresh(true)"
                >查询</a-button>
                <a-button
                  style="margin-left: 8px"
                  @click="() => queryParam = {}"
                >重置</a-button>
                <a
                  style="margin-left: 8px"
                  @click="toggleAdvanced"
                >
                  {{ advanced ? '收起' : '展开' }}
                  <a-icon :type="advanced ? 'up' : 'down'" />
                </a>
              </span>
            </a-col>
          </a-row>
        </a-form>
      </div>

      <div
        v-if="hasPerm('sysFileInfo:upload')"
        class="table-operator"
      >
        <a-upload
          name="file"
          :multiple="true"
          :custom-request="customRequest"
          :show-upload-list="false"
        >
          <a-button> <a-icon type="upload" />上传文件</a-button>
        </a-upload>
      </div>

      <s-table
        ref="table"
        size="default"
        :columns="columns"
        :data="loadData"
        :alert="true"
        :row-key="(record) => record.id"
        :row-selection="{ selectedRowKeys: selectedRowKeys, onChange: onSelectChange }"
      >
        <span
          slot="fileLocation"
          slot-scope="text"
        >
          {{ fileLocationFilter(text) }}
        </span>

        <span
          slot="fileSuffix"
          slot-scope="text"
        >
          <a-tag color="blue">{{ text }}</a-tag>
        </span>

        <span
          slot="action"
          slot-scope="text, record"
        >

          <a
            v-if="hasPerm('sysFileInfo:download')"
            @click="sysFileInfoDownload(record)"
          >下载</a>
          <a-divider
            v-if="hasPerm('sysFileInfo:download') & hasPerm('sysFileInfo:detail')"
            type="vertical"
          />
          <a
            v-if="hasPerm('sysFileInfo:detail')"
            @click="$refs.detailForm.detail(record)"
          >详情</a>
          <a-divider
            v-if="hasPerm('sysFileInfo:detail') & hasPerm('sysFileInfo:delete')"
            type="vertical"
          />
          <a-popconfirm
            v-if="hasPerm('sysFileInfo:delete')"
            placement="topRight"
            title="确认删除？"
            @confirm="() => sysFileInfoDelete(record)"
          >
            <a>删除</a>
          </a-popconfirm>
          <a-divider
            v-if="(hasPerm('sysFileInfo:preview') & record.fileSuffix === 'png' || record.fileSuffix === 'jpeg' || record.fileSuffix === 'jpg'|| record.fileSuffix === 'gif'|| record.fileSuffix === 'tif' || record.fileSuffix === 'bmp' ) & hasPerm('sysFileInfo:delete')"
            type="vertical"
          />
          <a
            v-if="(hasPerm('sysFileInfo:preview') & record.fileSuffix === 'png' || record.fileSuffix === 'jpeg'|| record.fileSuffix === 'jpg'|| record.fileSuffix === 'gif'|| record.fileSuffix === 'tif' || record.fileSuffix === 'bmp' )"
            @click="$refs.previewForm.preview(record)"
          >预览</a>
        </span>
      </s-table>

      <detail-form
        ref="detailForm"
        @ok="handleOk"
      />
      <preview-form ref="previewForm" />
    </a-card>
  </a-spin>
</template>

<script>
  import { STable } from '@/components'
  import { sysDictTypeDropDown } from '@/api/modular/system/dictManage'
  import { sysFileInfoPage ,sysFileInfoDelete ,sysFileInfoUpload ,sysFileInfoDownload} from '@/api/modular/system/fileManage'
  import detailForm from './detailForm'
  import previewForm from './previewForm'

  export default {
    components: {
      STable,
      detailForm,
      previewForm
    },

    data () {
      return {

        // 高级搜索 展开/关闭
        advanced: false,
        // 查询参数
        queryParam: {},
        // 表头
        columns: [
          {
            title: '存储位置',
            dataIndex: 'fileLocation',
            scopedSlots: {customRender: 'fileLocation'}
          },
          {
            title: '文件仓库',
            dataIndex: 'fileBucket'
          },
          {
            title: '文件名称',
            dataIndex: 'fileOriginName'
          },
          {
            title: '文件后缀',
            dataIndex: 'fileSuffix',
            scopedSlots: { customRender: 'fileSuffix' },
          },
          {
            title: '文件大小',
            dataIndex: 'fileSizeInfo'
          },
          {
            title: '唯一标识id',
            dataIndex: 'fileObjectName'
          },

        ],
        // 加载数据方法 必须为 Promise 对象
        loadData: parameter => {
          return sysFileInfoPage(Object.assign(parameter, this.queryParam)).then((res) => {
            return res.data
          })
        },
        cardLoading:false,
        fileLocationDictTypeDropDown:[],
        selectedRowKeys: [],
        selectedRows: [],

    }

    },

    created(){
      this.sysDictTypeDropDown()
      if(this.hasPerm('sysPos:edit') || this.hasPerm('sysPos:delete')){
        this.columns.push({
          title: '操作',
          width: '200px',
          dataIndex: 'action',
          scopedSlots: { customRender: 'action' }
        })
      }
    },

    methods: {

      fileLocationFilter (fileLocation) {
        const fileLocation_value = this.fileLocationDictTypeDropDown.filter(item => item.code == fileLocation)
        if(fileLocation_value.length>0){
          return fileLocation_value[0].value
        }
      },

      /**
       * 获取字典数据
       */
      sysDictTypeDropDown(){
        sysDictTypeDropDown({code:'file_storage_location'}).then((res)=>{
          this.fileLocationDictTypeDropDown=res.data
        })
      },

      /**
       * 下载文件（所有文件）
       */
      sysFileInfoDownload(record){
        this.cardLoading = true
        sysFileInfoDownload({id:record.id}).then((res)=>{
          this.cardLoading = false
          this.downloadfile(res)
        }).catch((err)=>{
          this.cardLoading = false
          this.$message.error('下载错误：获取文件流错误')
        })
      },
      downloadfile(res) {
        var blob = new Blob([res.data], {type: 'application/octet-stream;charset=UTF-8'});
        var contentDisposition = res.headers['content-disposition'];
        var patt = new RegExp("filename=([^;]+\\.[^\\.;]+);*");
        var result = patt.exec(contentDisposition);
        var filename = result[1];
        var downloadElement = document.createElement('a');
        var href = window.URL.createObjectURL(blob); //创建下载的链接
        var reg = /^["](.*)["]$/g;
        downloadElement.style.display = 'none';
        downloadElement.href = href;
        downloadElement.download = decodeURI(filename.replace(reg,"$1")); //下载后文件名
        document.body.appendChild(downloadElement);
        downloadElement.click(); //点击下载
        document.body.removeChild(downloadElement); //下载完成移除元素
        window.URL.revokeObjectURL(href);
      },


      sysFileInfoDelete(record){
        sysFileInfoDelete(record).then((res)=>{
          if(res.success) {
            this.$message.success('删除成功')
            this.$refs.table.refresh()
          }else{
            this.$message.error('删除失败：'+res.message)
          }
        }).catch((err)=>{
          this.$message.error('删除错误：'+err.message)
        })
      },

      toggleAdvanced () {
        this.advanced = !this.advanced
      },

      /**
       * 上传文件
       */
      customRequest(data){
          const formData = new FormData()
          formData.append('file', data.file)
          sysFileInfoUpload(formData).then((res) => {
            if (res.success) {
              this.$message.success('上传成功');
              this.$refs.table.refresh()
            } else {
              this.$message.error('上传失败：' + res.message);
            }
          })
      },


      handleOk () {
        this.$refs.table.refresh()
      },
      onSelectChange (selectedRowKeys, selectedRows) {
        this.selectedRowKeys = selectedRowKeys
        this.selectedRows = selectedRows
      }
    }

  }
</script>

<style lang="less">
  .table-operator {
    margin-bottom: 18px;
  }
  button {
    margin-right: 8px;
  }

</style>
